glittergalaze
You're saying you "wonder whether it would be fine" - well, define "fine". Is it the optimal choice health-wise? No. Will you survive it? Yes. After a fast, your appetite is stronger. In addition, alcohol lowers inhibitions. So while you will survive the two tequila shots, drinking at this stage of refeeding, and the lowered inhibitions that follow, may make it easier to choose to have two more tequila shots (I assume you know how that goes ;) what did oscar wilde say, two gin and tonics are too many, three are too few?). Also, lowered inhibitions may make it easier to make bad food choices as the night progresses - we've all been there,too, you know what I am talking about. If you end up eating something SAD shortly after a fast of ~20 days it will surely not digest normally ---- in short, it seems to me you are setting yourself up for feeling like crap for three days after lol.
And then comes hangover and "hangover food"
I can definitely relate to the "ah, I really would enjoy XYZ", but in this case it doesn't seem worth it. While obviously not drinking is ideal from a health standpoint, if you have decided that drinking will be a part of your life post-fast anyway it may be a good idea to simply delay a couple of weeks or until your digestion is normal and back on track.